Some more links and physics applets (or "physlets"):
General physics
Some physics applets from MSU
More physics applets from MSU
Physlets from Davidson College. An organized collection of physics applets ("physlets") from a textbook with CD. It includes questions based on the applets. Look under Part II: Curricular Material.
More physlets, this time scripted by Peter Sheldon `89, a professor at Randolph-Macon Woman's College.
A lot of math and physics applets. The ripple tank applet has an ENORMOUS number of options: try adding in your own walls to the plane wave simulator.
The Virtual Physics Laboratory at National Taiwan Normal University You can find the applets through a link to each subject area at the top of the page.
Nori's Personal Computer Physics page. Contains applets and QuickTime movies. I suggest adding your own homemade sound effects to the "Billiards of Molecules" applet.
Physics 2000 at UC-Boulder. Each of the three "units" - Einstein's legacy (modern physics and technology), The Atomic Lab (quantum physics), and Science Trek (how things work) - contains a large collection of applets. Beware of old male prof answering young female's silly questions.
From ExploreScience.com. A collection of Shockwave programs illustrating various physics concepts, including waves and optics.
This one is in French. Some of the applets, such as the Fourier synthesizer, are more self- explanatory than others.
The HyperPhysics website at Georgia State University. This site has helped me with many a lab writeup. No applets, just some java calculators and a very well-organized summary of physics information.
King's University College in Canada. Another collection of applets on general physics topics.
Stat Mech:
Four applets on Fresnel diffraction, the Cornu spiral, and Brownian motion and diffusion into a liquid. Whatever you do, don't click on the pop-up ads!
Waves and Optics:
The Science Joy Wagon. Contains various interactive applets and Shockwave demonstrations.
Only two applets towards the bottom, but a bunch of Mathematica animations from some guy at Kettering University. Kind of unwieldy, but pretty thorough text explanations.
Traveling and standing pressure waves in tubes. (Unfortunately, I was not able to find one single website that contains links to both applets.)
Very introductory material on the physics of sound from the electrical engineering department of San Jose State University. There is a succinct explanation of logarithmic scales.
Links to two applets on Fraunhofer diffraction and the Huygens-Fresnel principle. The link itself is in German, but the applet info is in English.
Several applets on optics from York University in Canada. Look under "Web-tutorials on:"
Music stuff:
A Shockwave piano. Has links to applet pipes, a drum, and more things with which you can waste your time.
A "virtual guitar" applet. Pretty neat.
The "Little Shop of Music" at Colorado State University. Has Shockwave programs used in a Physics of Sound and Music course. "Auditory Illusion" and "The Beat Goes On" are the most educational.
A large collection of links on the physics of music.
A 1999 Scientific American article on the throat singers of Tuva, Siberia.
Interactive notes from a Music and Computers course at Dartmouth. You can access the various applets on each topic by clicking on the pulsating apples.
Miscellaneous:
A speech analyzer. That is, a speech viewing and analysis software thingy.
A Physics Today article on how humans map sounds.
Lecture notes from a course on hearing and sound perception at the University of Sussex.
Several applets on sound and modern physics from a Professor Dan Boye, again at Davidson College.
The department of Mathematics and Statistics at Langara College. A really large collection of links to various internet resources in mathematics.
An instructive site from Rice University: how to build an inexpensive Galilean-type telescope.